Question

3. Efetue:
a) (1 +41) + (6 +21) =
b)(-1 +51) +(1+1) =
c) (5 + 41) - (2+31) =
d) (2-51)-(1 +31) =
e) (2 + 21).(3-21) =​

Answer 1

Explicação passo-a-passo:

a) 42 + 27= 69

b) +50 +2= +52

c) 46 - 33= 13

d) - 49 - 32= - 81

e) 23 . (-18)= - 414